Selective signaling system.



H. 0. RUGH. SELBGTIVB SIGNALING SYSTEM.

APPLICATION FILED TBB. 15, 1910.

Patented Jan. 21, 1913.

Mmmm.,

2 SHEETS-SHEET 1,

H. HUGH.

SELEGTIV.' SIGNALING SYSTEM. AWLICATION FILED 1113.15, 1910.

L95 LQ'Y. Patented 32111.21, 1913.

2 SHEETS-SHEET 2.

"ll-lt n @anni menare..

Specification of Letters Patent.

.Patented dan, 2.931, 1913.

To all whom t may concern:

Be it known that 1, HARRY O. RUoi-r, citi zen of the United States, residing at Sandwich, in the county of Dekalb and State ot illinois, have invented a certainnew and useful improvement in Selective Signaling' Systems, of which the following is a full, clear, concise, and exact description, reference'bcing had to the accompanying drawings, forming a part oi this specilication.

My invention relates to selective signaling systems, and has for its object the provision of an improved system of this kind, in which a central station is adapted to call selectively a lurality of substations.

. 1n the preildrred form of the invention, i employ means for stepping up an impulse mechanism at each substation, which, when in its pro er position, operates a local signal-contro ling device, or signal in conjunc tion with automatic means i'or restoring said device to normal position when the 'signaling operation is complete, one oi' the prime objects herein being-'the provision of a substation selector, Which,in its preferred form is not dependent upon differences of polarity of the operating current for its o pe'ration, so that transpositions of the line circuit or-changes of the connections of the devices to the line circuit do not influence its operations, because it is only required, in order to call any given station, to send impulses ot a. certain character, and in theV preferred form, all ofthe saine nat-urecorresponding to that station, and When the impulses cease and the signaling operation is complete, the apparatus, through the agency of the very simplified means shown, restores itself to normal. To accomplish 40this result, I have shown an impulse mechavnism and a step-up magnet for same, in

conjunction With a slow-acting magnet, Which controls a locking pavvl for impulse mechanism.

My invention, of course, is susceptible of many modifications, and I do not limit myselflto the specific vform .which the-carrying out of my invention takes in this particular description and illustration. 1

1 Will describe my linvention more in detail by reference to the` accompanying drawings, in which.

Figure l Shows my improved signaling` system, and Fig. 2'shows the addition to my improved system of means for providing a special signaling condition to which my invention is adaptable.,

yReferring more particularly to Fig. 1 shoiv a central station A., and substations l, C and D, as united by a line circuit consist-ing ot' the line vvires 1 and 2. At the central station, there is a "battery 3, and a key t, which is utilized to send the necesn sary number ot' impulses over the line circuit 1 and 2, to properlyY call the substations.

The apparatus at the substations being si1ni-' lar with the exception ot the different angu- 'lar positions occupied by the circuit-closing arms, l will describe simply the apparatus at substation B. This consists of an impulse Wheel 5, having integral therewith a notched wheel 6, and a circuit-closing arm 7, which is adapted to contact with a. spring 8. 'A spring 9 contacts With the Wheel-6, Whenever the impulse mechanism 5 is moved from its zero position, but does not contact therewith when the impulse mechanism is in its zero position. -The stepping-up impulses actuate a magnet 10, bridged across line conductors, which magnet, by means of the armature 11, and'step-up arm 12, successively engages the diiierent teeth o the mechanism 5 to step up to the circuit- 'making connection with the spring 8. For instance, assuming that it takes tive impulses to actuate station B, live impulses are sent by means of the key t, and the key is held closed at the last impulse, which thereupon allow/s the bell 13, through the agency of the contact 14, armature 11, battery 12, cleinents Tand 8 and the ground, to ring. 1n stepping past the station B, the impulses are of such short duration that the slow-acting bell 413 has not time to operate, but if circuit closiire is effected of the elements 7 and 8, and a certain time interval elapses, the bell 13 will operate. After the key 1i is released, after having called the station B by maintaining the last impulse, the armature 11 falls back to contact with the back contact 'l 5, and thereby establishes a circuit from the ground through the battery 12, armature 11, back contact 15, Winding of the magnet 16, spring 9, Wheel 6 and the ground. rlhis circuit is established in the course of the stepping up operations only momentarily, and the momentary establishment of this circuit does not `give sugliicienttime to actuate the magnet 16 on acc'ount of the heavy current conducting shell 17, preferably of copper, which is placed thereon, thus making it a very slow-acting magnet or t-ime element. l/Vlien, however, the armature 11 permanently falls back to seat against the contact 15, this circuit remains closed long enough to permit energization of the magnet 16, thereby to attract its armature 18,

which armature permanently controls .a j locking pawl 19, -and to withdraWsaid locking pawl together -with the operating arm 12 out of engagement with the. mechanism 5", thus allowing same to return to normal position, at which time, the spring 9 no longer contacts with the notched wheel 6, as it is opposite the notch, and the circuit through the magnet is again opened. A spring-2-0,

shown in dotted lines, restores the impulse mechanism 5 to noril. It will thus be seen that any station can be called by merely sending a given number of impulses, and an automatically controlling lpckin pawl reD stores the mechanism to norma when the signaling operation has ceased.

In Fig. 2, I have shown mechanism similar to that shown in Fig. 1,- with the exception of a circuit-changing switch 21 at the central station, so that positive or negative battery may be furnished, if desired, and I then include a polar relay 22 in series with a magnet 10,` which is actuated either by. positive or negative impulses, which relay has an armature 23, that remains in either one position `or the other, depending upon the polarity of the'current which last operated said' armature. This armature is pivoted at the center so that when it is actuated by an impulse of one polarity it makes con- ;tfact with the back Contact 25 and remains in this position until an impulse of opposite polarity reverses the position of the armature in which case it makes contact with its alternative back contact and remains there until an impulse of the first polarity again actuates it. The bell 13, as shown, is of t-he ordinary vibrating type, but

has an additional circuit established by means of the conductor 24, which eliminates the vibratory contact, andthus, when, say, negative current is used, armature 23 contacts with the contact 25, and the circuit through the spring 8 cannot be closed on account of the spring 26, as the armature 23 is ,in its opposite position, and every negative impulse through the ma et 10 and relay 22 Vcloses circuit through the coils of the bell 13,

` and gives one impulse. The spring y26 serves merely to cut out contact making spring 8 when the arma-ture 23 contacts with its back contact 25J in which' case, the contact of the bell 13 'is also out of circuit, and said bell responds by giving impulses of a single strqke or unitary character depending upon lthe impulses transmitted through its winding. Thus, the bell 13 gives one tap whenever the key 4 is depressed, and the bell will not operate through the agency of the impulse mechanism 5', as the circuit through the spring 8 is opened in that condition. T his is oi particular utility in connection with sending the time impulses that are usually sent over a signaling circuit vof this kind, when used along railroads.

`Vi/hile l have herein shown and particu- 'larly described the preferred embodiment of my invention, I do not limit myself to the precise construction and arrangement as herein set forth, but

' Having described the more salient ea.- turesof this invention, what I claim as new vand desire to secure by Letters Patent is:

1. A signaling system comprising a signalsendinof station and signal-receiving stations unitedtby a line circuit, a signal circuit-closing element at each receiving station, a signal under the control of each element, a

controlling relay-magnet foreach element,

means at the sending station to control the magnets and thereby control the actuation of said elements, a slow-acting magnet at each receiving station to control the restoration of said elements tol normal position, means whereby said relay-magnet controls the circuit through said signal, and means whereby said elements and said relay-magnets control the circuits through their associated slow-acting magnets.

2. A signaling system comprising a signal-sending station and signal-receiving stations, a signal-circuit-closing element at each receiving stat-ion, a signal under the control of each element, a relaymagnet for operating each element and also independently controlling the circuit through its associated signal, means at the sending station including impulse sending means to control the magnets and thereby control the actuation of said elements, and a slow-acting magnet operativelyresponsive only after cessation of said impulses at each receiving station to control the restoration of said elements to normal position.

3. A signaling system comprising a signal-sending station and signal-receiving stations united by a line circuit, a step-by-step signal circuit-closing element at each receiving station, a signal under the control of each element, a controlling relay magnet for i provided negative battery is used,

4. A signaling system comprising a signal-sending` station and signal-receiving sta tions, having at cach receiving station a for same, Whose circuit is momentarily closed during each stepping operation but Whose arniature attracting energization docs not become 'effective during these momentary circuit closures, and a signal whose circuit controlled conjoint-ly by said step lay-step element and said relay-magnet, to gether with means Wherebj. die step-hv-step element controls the circuit tlnv ugh Said release magnet, and having means at the sending station for controlling said step-up relay-magnet.

- In Witness whereof7 I hereunto subscribe my name this 1st day of February A. D.,

HARRY 0. RUGH.

Witnesses: Y MAXW. ZABEL," J. ELLIOTT; 

